A winter storm watch is usually issued when a storm system is one to two days from starting. This long lead time is used to help you get ready if you have to make travel or work changes. Eventually as the storm gets closer, the winter storm watch either turns to a winter storm warning or a winter weather advisory.

New Jersey is bracing for two rounds of snow and ice starting Tuesday afternoon. The first storm could bring 4 to 8 inches of snow to southern counties. The second storm starting Wednesday afternoon will include a few inches of snow for northern New Jersey and a dangerous coating of ice. National Weather Service

Light snow near and south of the Hartford-Providence-Plymouth line should produce a coating of 1 to 2 inches of snow Tuesday night, according to the National Weather Service. Forecasters expect that snow should leave during the pre-dawn hours of Wednesday.